Thermometer



FIG. 1 is a front view of our new design for a thermometer.

FIG. 2 is a left side view of the thermometer shown in FIG. 1, the right side being a mirror image thereof; and,

FIG. 3 is a bottom view of the thermometer shown in FIG. 1.

The subject matter shown in dashed lines is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a thermometer, as shown and described. 